操作步骤：

1、找出10.0.0.9的MAC地址

Switch#ping 10.0.0.9

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.0.9, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
Switch#sh arp | in 10.0.0.9
Internet  10.0.0.9                4   0014.5e19.8345  ARPA   Vlan1
Internet  10.0.0.92               0   0019.bbdc.1d1f  ARPA   Vlan1
Internet  10.0.0.93               0   001e.4f98.0934  ARPA   Vlan1

2、查看MAC地址0014.5e19.8345的相应端口，显示为在fast4/23端口上

Switch#show mac-address-table address 0014.5e19.8345
Unicast Entries
 vlan   mac address     type        protocols               port
——-+—————+——–+———————+——————–
   1    0014.5e19.8345   dynamic ip                     FastEthernet4/23

3、制作fast4/23的镜像端口->fast4/46

Switch(config)#monitor session 1 source interface fastEthernet 4/23
Switch(config)#monitor session 1 destination interface fastEthernet 5/46

这样，就完成了从查找端口到制作镜像口的操作。